In China, more and more villagers have left their villages to work in big cities. As a result, their
children have become left-behind children and they need more care. The survey below was done in
villages in Yongzhou, Hunan Province. Three hundred left-behind children were chosen to answer the questions.

What do you need most?	Love	Money	Freedom （自由）	Control	Something else
40%	18%	28%	10%	4%
Whom do you communicate with?	Oneself	Family members	No one
27%	55%	18%
Can you communicate with your parents freely?	Yes	A little difficult	No
46%	44%	10%
Do you want to live with your parents or alone?	Living with parents	Living alone	No idea
58%	14%	28%
What do you think of your parents' working in cities?	Bad	Good	No idea
20%	39%	41%
What's your happiest place?	School	Home	Friends' homes
48%	34%	18%

The survey was done to         。
A. make left-behind children go to school
B. know how to make children happy
C. care about left-behind children
Of all the four things, the children need       most.
A. love                 B. money                C. freedom
58% of the children like to
A. live with their grandparents
B. live in big cities
C. live with their parents
How many children think their happiest place is their school?
A. 48.                  B. 102.                   C. 144.
We can learn from the survey that __________.
A. over 40% of the children have difficulty talking to their parents freely
B. about 1/3 of the children think their parents' working in cities is bad
C. about half of the children have no one to talk with